angel1001 angel1001

02-03-2017
Mathematics

contestada

Two angels are complementary. One angle is 18 degrees more than 2 times the other. Find the angles.

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rarrininger rarrininger

05-03-2017

two complementary angles = 90°
X = 18+ 2y
X + y = 90
Plug first equation into second
18 + 2y +y = 90
18 + 3y = 90
18 – 18 +3y = 90 – 18
3 y = 72
3y/3 = 72/3
Y = 24
Plug y into 2nd formula
X + 24 = 90
X + 24 -24 = 90 – 24
X = 66

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